Orion Power Systems ONLINE RT1 LITHIUM User manual

LiFePO4 1.5K/2K/3K Online UPS
Uninterruptible Power Supply System
Version: 1.0
www.orionpowersystems.com
ONLINE RT1 LITHIUM
User Manual

Table of Contents
1. Important Safety Warning ................................................................................... 1
1-1. Transportation ........................................................................................................................... 1
1-2. Preparation ................................................................................................................................ 1
1-3. Installation ................................................................................................................................ 1
1-4. Operation .................................................................................................................................. 2
1-5. Maintenance, service and faults ................................................................................................ 2
2. Installation and setup .......................................................................................... 4
2-1. Rear panel view ........................................................................................................................ 4
2-2. Operating principle ................................................................................................................... 4
2-3. Install the UPS (Only for RT1 Models) .................................................................................... 5
2-4. Setup the UPS ........................................................................................................................... 5
2-5. Battery Replacement ................................................................................................................. 7
3. Operations ............................................................................................................ 9
3-1. Button operation ....................................................................................................................... 9
3-2. LCD Panel ................................................................................................................................ 9
3-3. Audible Alarm .......................................................................................................................... 11
3-4. LCD display wordings index ................................................................................................... 11
3-5. UPS Setting .............................................................................................................................. 11
3-6. Operating Mode Description .................................................................................................. 16
3-7. Faults Reference Code ............................................................................................................ 17
3-8. Warning indicator ................................................................................................................... 17
4. Troubleshooting .................................................................................................. 18
5. Storage and Maintenance ................................................................................... 19
6. Specifications ..................................................................................................... 20

1
1. Important Safety Warning
Please comply with all warnings and operating instructions in this manual strictly. Save this
manual properly and read carefully the following instructions before installing the unit. Do not
operate this unit before reading through all safety information and operating instructions
carefully.
1-1. Transportation
 Please transport the UPS system only in the original package to protect against shock
and impact.
1-2. Preparation
 Condensation may occur if the UPS system is moved directly from cold to warm
environment. The UPS system must be absolutely dry before being installed. Please
allow at least two hours for the UPS system to acclimate the environment.
 Do not install the UPS system near water or in moist environments.
 Do not install the UPS system where it would be exposed to direct sunlight or near
heater.
 Do not block ventilation holes in the UPS housing.
1-3. Installation
 Do not connect appliances or devices which would overload the UPS system (e.g.
laser printers) to the UPS output sockets.
 Place cables in such a way that no one can step on or trip over them.
 Do not connect domestic appliances such as hair dryers to UPS output sockets.
 The UPS can be operated by any individuals with no previous experience.
 Connect the UPS system only to an earthed shockproof outlet which must be easily
accessible and close to the UPS system.
 Please use only VDE-tested, CE-marked (or UL-marked for 100/110/115/120/125 VAC
models) mains cable (e.g. the mains cable of your computer) to connect the UPS
system to the building wiring outlet (shockproof outlet).
 Please use only VDE-tested, CE-marked (or UL-marked for 100/110/115/120/125 VAC
models) power cables to connect the loads to the UPS system.
 When installing the equipment, it should ensure that the sum of the leakage current
of the UPS and the connected devices does not exceed 3.5mA.
 Temperature Rating - Units are considered acceptable for use in a maximum ambient
of 40°C (104°F).
 For Pluggable Equipment - The socket-outlet shall be installed near the equipment
and shall be easily accessible.
 CAUTION: The unit is heavy. Lifting the unit requires a minimum of two people.
 Batteries with minimum case flame rating V-2 are intended for use in a computer
room as defined in the Standard for the Protection of Information Technology
Equipment, ANSI/NFAP 75. Batteries with case flame rating HB are not intended for
use in a computer room. (US installations only.)

2
1-4. Operation
 Do not disconnect the mains cable on the UPS system or the building wiring outlet
(shockproof socket outlet) during operations since this would cancel the protective
earthing of the UPS system and of all connected loads.
 The UPS system features its own, internal current source (batteries). The UPS output
sockets or output terminals block may be electrically live even if the UPS system is not
connected to the building wiring outlet.
 In order to fully disconnect the UPS system, first press the OFF/Enter button to
disconnect the mains.
 Prevent no fluids or other foreign objects from inside of the UPS system.
 The EPO and USB circuits are an IEC 60950-1 safety extra low voltage (SELV) circuit.
This circuit must be separated from any hazardous voltage circuits by reinforced
insulation.
1-5. Maintenance, service and faults
 The UPS system operates with hazardous voltages. Repairs may be carried out only
by qualified maintenance personnel.
 Caution - risk of electric shock. Even after the unit is disconnected from the mains
(building wiring outlet), components inside the UPS system are still connected to the
battery and electrically live and dangerous.
 Before carrying out any kind of service and/or maintenance, disconnect the batteries
and verify that no current is present and no hazardous voltage exists in the terminals
of high capability capacitor such as BUS-capacitors.
 To avoid electrical shock, turn off the unit and unplug it form the AC power source
before servicing the battery
 Only persons are adequately familiar with batteries and with the required
precautionary measures may replace batteries and supervise operations.
Unauthorized persons must be kept well away from the batteries.
 Caution - risk of electric shock. The battery circuit is not isolated from the input
voltage. Hazardous voltages may occur between the battery terminals and the
ground. Before touching, please verify that no voltage is present!
 Caution - Do not dispose of batteries in a fire. The batteries may explode.
 Caution - Do not open or mutilate batteries. Released electrolyte is harmful to the
skin and eyes. It may be toxic.
 Batteries may cause electric shock and have a high short-circuit current. Please take
the precautionary measures specified below and any other measures necessary when
working with batteries:
a) Remove watches, rings, or other metal objects.
b) Use tools with insulated handles.
c) Wear rubber gloves and boots.
d) Do not lay tools or metal parts on top of batteries.
e) Disconnect charging source and load prior to installing or maintaining the
battery.
f) Remove battery grounds during installation and maintenance to reduce
likelihood of shock. Remove the connection from ground if any part of the
battery is determined to be grounded.

3
 When changing batteries, install the same number and same type of batteries or
battery packs.
Manufacturer Type Rated
Voltronic Power LIFE-247500 25.6 V dc, 7.5 Ah
LIFE-485000 48 V dc, 5.0 Ah
LIFE-722500 76.8 V dc, 2.5 Ah
 Please replace the fuse only with the same type and amperage in order to avoid fire
hazards.
 Do not dismantle the UPS system.
 WARNING: This is a category C2 UPS product. In a residential environment, this
product may cause radio interference, in which case the user many be required to
take additional measures. (only for CE model 200/208/220/230/240 VAC system)
Only for 100/110/115/120/125 VAC VAC system:
 NOTE: This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed
to provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference
in which case the user will be required to correct the interference at his own expense.
 WARNING: Changes or modifications not expressly approved by the party
responsible for compliance could void the user's authority to operate the equipment.

4
2. Installation and setup
NOTE: Before installation, please inspect the unit. Be sure that nothing inside the package is
damaged. Please keep the original package in a safe place for future use.
2-1. Rear panel view
1K/1.5K 2K
3K
1. Programmable outlets: connect to non-critical loads
2. Output receptacles: connect to mission-critical loads
3. AC input
4. Network/Fax/Modem surge protection
5. USB communication port
6. RS-232 communication port
7. SNMP intelligent slot
8. Emergency power off function connector (EPO)
9. External battery connection
2-2. Operating principle
The operating principle of the UPS is shown as below

5
2-3. Install the UPS (Only for RT Models)
For safety consideration, the UPS is shipped out from factory without connecting battery wires.
Before install the UPS, please follow below steps to re-connect battery wires first.
Step 1 Step 2 Step 3
Remove front panel. Connect the AC input and
re-connect battery wires.
Put the front panel back to the
unit.
This UPS can be either displayed on the desk or mounted in the 19” rack chassis. Please choose
proper installation to position this UPS.
Rack-mount Installation
Step 1 Step 2
Tower Stand Installation
Step 1 Step 2 Step 3
2-4. Setup the UPS
Before installing the UPS, please read below to select proper location to install UPS.
1. UPS should be placed on the flat and clean surface. Place it in an area away from vibration,
dust, humidity, high temperature, flammable liquids, gases, corrosive and conductive
contaminants. Install the UPS indoors in a clean environment, where it is away from
window and door. Maintain minimum clearance of 100mm in the bottom of the UPS to
avoid dust and high temperature.

6
2. It’s required to maintain maximum altitude of 3000m to keep UPS normal operation at full
load UPS.
3. Place UPS:
It’s equipped with fan for cooling. Therefore, place the UPS in a well-ventilated area. It’s
required to maintain minimum clearance of 100mm in the front of the UPS and 300mm in the
back and two sides of the UPS for heat dissipation and easy-maintenance.
Step 1: UPS input connection
Plug the UPS into a two-pole, three-wire, grounded receptacle only. Avoid using extension
cords.
 For 200/208/220/230/240VAC models: The power cord is supplied in the UPS package.
 For 100/110/115/120/125/127VAC models: The power cord is attached to the UPS. The
input plug is a NEMA 5-15P for DC1500RT1L model, NEMA 5-20P for DC2000RT1L model
and NEMA L5-30P for DC3000RT1L model.
 To reduce the risk of fire, connect only to a circuit provided with (@) A maximum branch
circuit overcurrent protection in accordance with the National Electrical Code, ANSI/NFPA
70 and the Canadian Electrical Code, Part I, C22.1".
Model (@)
DC1500RT1L 15A
DC2000RT1L 20A
DC3000RT1L 30A
Note: Check if the site wiring fault indicator lights up in LCD panel. It will be illuminated when
the UPS is plugged into an improperly wired utility power outlet (Refer to Troubleshooting
section).
Step 2: UPS output connection
There two kinds of outputs: programmable outlets and general outlets. Please connect
non-critical devices to the programmable outlets and critical devices to the general outlets.
During power failure, you may extend the backup time to critical devices by setting shorter
backup time for non-critical devices.
Step 3: Communication connection
Communication port:
USB port RS-232 port Intelligent slot
To allow for unattended UPS shutdown/start-up and status monitoring, connect the
communication cable one end to the USB/RS-232 port and the other to the communication
port of your PC. With the monitoring software installed, you can schedule UPS
shutdown/start-up and monitor UPS status through PC.
The UPS is equipped with intelligent slot perfect for either SNMP or AS400 card. When
installing either SNMP or AS400 card in the UPS, it will provide advanced communication and
monitoring options.
Step 4: Network connection
Network/Fax/Phone surge port
Connect a single modem/phone/fax line into surge-protected “IN” outlet on the back panel of

7
the UPS unit. Connect from “OUT” outlet to the equipment with another modem/fax/phone line
cable.
Step 5: Disable and enable EPO function
This UPS is equipped with EPO function. By default, the UPS is delivered from factory with Pin
1 and pin 2 closed (a metal plate is connected to Pin 1 and Pin2) for UPS normal operation. To
activate EPO function, remove two screws on EPO port and metal plate will be removed.
Note: The EPO function logic can be set up via LCD setting. Please refer to program 16 in UPS
setting for the details.
Step 6: Turn on the UPS
Press the ON/Mute button on the front panel for two seconds to power on the UPS.
Note: The battery charges fully during the first five hours of normal operation. Do not
expect full battery run capability during this initial charge period.
Step 8: Install software
For optimal computer system protection, install UPS monitoring software to fully configure UPS
shutdown. Use supplied RS-232 or USB communication cable to connect RS-232/USB port of
UPS and RS-232/USB port of PC. Then, follow below steps to install monitoring software.
1. Insert the included installation CD into CD-ROM drive and then follow the on-screen
instructions to proceed software installation. If there no screen shows 1 minute after
inserting the CD, please execute setup.exe file for initiating software installation.
2. Follow the on-screen instructions to install the software.
3. When your computer restarts, the monitoring software will appear as an orange plug icon
located in the system tray, near the clock.
2-5. Battery Replacement
When the icons of and are flashing in LCD display and alarm is sounding every 2
seconds, it’s time to replace batteries. Contact your service representative to replace batteries.
Batteries can be replaced easily without turning the UPS off or disconnecting the load. If you
prefer to remove input power to change the batteries, press the OFF button on the front panel
for two seconds to power off the UPS and switch off utility power where the UPS is connected.
NOTE 1 : DO NOT DISCONNECT the batteries while the UPS is in Battery mode.
NOTE 2 : A small amount of arcing may occur when connecting the internal batteries. This is
normal condition and no harm for personnel. Connect the cables quickly and firmly.
NOTE 3 : This UPS is equipped with internal batteries and only service person can replace the
batteries.
It’s in closed status for UPS
normal opera
tion
as default
.
To activate EPO
function, remove
these two screws.

8
NOTE 4 : Upon battery disconnection, equipment is not protected from power outages.
CAUTION!! Consider all warnings, cautions, and notes before replacing batteries.
Step 1 Step 2 Step 3
Remove front panel. Disconnect battery wires. Pull out the battery box by
removing two screws on the
front panel.
Step 4 Step 5 Step 6
After replacing the batteries,
put the battery box back to
original location and screw it
tightly.
Re-connect the battery
wires.
Put the front panel back to the
unit.

9
3. Operations
3-1. Button operation
Button Function
ON/Mute
Button
 Turn on the UPS: Press and hold ON/Mute button for at least 2 seconds to
turn on the UPS.
 Mute the alarm: After the UPS is turned on in battery mode, press and
hold this button for at least 3 seconds to disable or enable the alarm
system. But it’s not applied to the situations when warnings or errors
occur.
 Up key: Press this button to display previous selection in UPS setting
mode.
 Switch to UPS self-test mode: Press ON/Mute buttons for 3 seconds to
enter UPS self-testing while in AC mode, ECO mode, or converter mode.
OFF/Enter
Button
 Turn off the UPS: Press and hold this button at least 2 seconds to turn off
the UPS. UPS will be in standby mode under power normal or transfer to
Bypass mode if the Bypass enable setting by pressing this button.
 Confirm selection key: Press this button to confirm selection in UPS
setting mode.
Select
Button
 Switch LCD message: Press this button to change the LCD message for
input voltage, input frequency, input current, battery voltage, battery
current, battery capacity, ambient temperature, output voltage, output
frequency, load current and load percent.
 Setting mode: Press and hold this button for 3 seconds to enter UPS
setting mode when Standby and Bypass mode.
 Down key: Press this button to display next selection in UPS setting
mode.
ON/Mute
+ Select
Button
 Switch to bypass mode: When the main power is normal, press ON/Mute
and Select buttons simultaneously for 3 seconds. Then UPS will enter to
bypass mode. This action will be ineffective when the input voltage is out
of acceptable range.
 Exit setting mode or return to the upper menu: When working in setting
mode, press ON/Mute and Select buttons simultaneously for 0.2 seconds
to return to the upper menu. If it’s already in top menu, press these two
buttons at the same time to exit the setting mode.
3-2. LCD Panel

10
Display Function
Backup time information
Indicates the estimated backup time.
H: hours, M: minute, S: second.
Configuration and fault information
Indicates the configuration items, and the configuration items are listed
in details in section 3-5.
Indicates the warning and fault codes, and the codes are listed in details
in section 3-7 and 3-8.
Mute operation
Indicates that the UPS alarm is disabled.
Output information
Indicates the output voltage and output frequency.
Vac: AC voltage, Vdc: DC voltage, Hz: frequency
Load information
Indicates the load level by 0
-
24%, 25
-
49%, 50
-
74% and 75
-
100%.
Indicates overload.
Indicates the load or the
UPS
outpu
t is
short circuit.
Programmable outlets information
Indicates that programmable management outlets are working.
Mode operation information
Indicates the UPS connects to the mains.
Indicates the battery is working.
Indicates the bypass circuit is working.
Indicates the ECO mode is enabled.
Indicates the inverter circuit is working.
Indicates the output is working.
Battery information
Indicates the battery level by 0-24%, 25-49%, 50-74%, and 75-100%.
Indicates the battery is fault.
Indicates
low battery
.
Input & battery information
Indicate the input voltage, input frequency and battery voltage.
Vac: AC voltage, Vdc: DC voltage, Hz: frequency

11
3-3. Audible Alarm
Battery Mode Sounding every 5 seconds
Low Battery Sounding every 2 seconds
Overload Sounding every second
Fault Continuously sounding
Bypass Mode Sounding every 10 seconds
3-4. LCD display wordings index
Abbreviation Display content Meaning
ENA Enable
DIS Disable
ESC Escape
HLS High loss
LLS Low loss
AO Active open
AC Active close
EAT Estimated autonomy time
RAT Running autonomy time
SD Shutdown
OK OK
ON ON
OI Over input current
SF Site wiring fault
EP EPO
TP Temperature
CH Charger
FU Bypass frequency unstable
BR Battery Replace
EE EEPROM error
3-5. UPS Setting
There are three parameters to set up t
he U
PS.
Parameter 1: It’s for program alternatives.
Refer to below table.
Parameter 2 and 3 are the setting options or
values for each program.

12
 01: Output voltage setting
Interface
Setting
Parameter 3: Output voltage
For 230 Models, You may choose the following output
voltage:
200: presents output voltage is 200Vac
208: presents output voltage is 208Vac
220: presents output voltage is 220Vac
230: presents output voltage is 230Vac (Default)
240: presents output voltage is 240Vac
For 120 Models, You may choose the following output
voltage:
100: presents output voltage is 100Vac
110: presents output voltage is 110Vac
115: presents output voltage is 115Vac
120: presents output voltage is 120Vac (Default)
125: presents output voltage is 125Vac
127: presents output voltage is 127Vac
(127 is not applicable to U.S. voltage)
 02: Frequency Converter enable/disable
Interface
Setting
Parameter 3: Enable or disable converter mode. You may
choose the following two options:
CF ENA: converter mode enable
CF DIS: converter mode disable (Default)
 03: Output frequency setting
Interface
Setting
Parameter
3
: Output frequency setting.
You may set the initial frequency on battery mode:
BAT 50: presents output frequency is 50Hz
BAT 60: presents output frequency is 60Hz
If converter mode is enabled, you may choose the following
output frequency:
CF 50: presents output frequency is 50Hz
CF 60: presents output frequency is 60Hz
 04: ECO enable/disable
Interface
Setting
Parameter 3: Enable or disable ECO function. You may
choose the following two options:
ENA: ECO mode enable
DIS: ECO mode disable (Default)

13
 05: ECO voltage range setting
Interface Setting
Parameter 3: Set the acceptable high voltage point and
low voltage point for ECO mode by pressing Down key or Up
key.
HLS: High loss voltage in ECO mode in parameter 2.
For 230 Models, the setting range in parameter 3 is from
+7V to +24V of the nominal voltage. (Default: +12V)
For 120 Models, the setting range in parameter 3 is from
+3V to +12V of the nominal voltage.
(Default: +6V)
LLS: Low loss voltage in ECO mode in parameter 2.
For 230 Models, the setting range in parameter 3 is from -7V
to -24V of the nominal voltage.
(Default: -12V)
For 120 Models, the setting voltage in parameter 3 is from
-3V to -12V of the nominal voltage.
(Default: -6V)
 06: Bypass enable/disable when UPS is off
Interface Setting
Parameter 3: Enable or disable Bypass function. You may
choose the following two options:
ENA: Bypass enable
DIS: Bypass disable (Default)
 07: Bypass voltage range setting
Interface
Setting
Parameter
3
:
Set the acceptable high voltage point and
acceptable low voltage point for Bypass mode by pressing
the Down key or Up key.
HLS: Bypass high voltage point
For 230 Models:
230-264: setting the high voltage point in parameter 3
from 230Vac to 264Vac. (Default: 264Vac)
For 120 Models:
120-140: setting the high voltage point in parameter 3
from 120Vac to 140Vac. (Default: 132Vac)
LLS: Bypass low voltage point
For 230 Models:
170-220: setting the low voltage point in parameter 3 from
170Vac to 220Vac. (Default: 170Vac)
For 120 Models:
85-115: setting the low voltage point in parameter 3 from
85Vac to 115Vac. (Default: 85Vac)

14
 08: Bypass frequency range setting
Interface Setting
Parameter 3: Set the acceptable high frequency point and
acceptable low frequency point for Bypass mode by
pressing the Down key or Up key.
HLS: Bypass high frequency point
For 50Hz output frequency models:
51-55Hz: setting the frequency high loss point from 51Hz
to 55HZ(Default: 53.0Hz)
For 60Hz output frequency models:
61-65Hz: setting the frequency high loss point from 61Hz
to 65Hz(Default: 63.0Hz)
LLS: Bypass low Frequency point
For 50Hz output frequency models:
45-49Hz: setting the frequency low loss point from 45Hz to
49HZ(Default: 47.0Hz)
For 60Hz output frequency models:
55-59Hz: setting the frequency low loss point from 55Hz to
59Hz(Default: 57.0Hz)
 09: Programmable outlets enable/disable
Interface Setting
Parameter 3: Enable or disable programmable outlets.
ENA: Programmable outlets enable
DIS: Programmable outlets disable (Default)
 10: Programmable outlets setting
Interface Setting
Parameter 3: Set up backup time limits for programmable
outlets.
0-999: setting the backup time limits in minutes from
0-999 for programmable outlets which connect to
non-critical devices on battery mode. (Default: 999)
 11: Autonomy limitation setting
Interface
Setting
Parameter
3
:
Set up backup time on battery mode for
general outlets.
0-999: setting the backup time in minutes from 0-999 for
general outlets on battery mode.
DIS: Disable the autonomy limitation and the backup time
will depend on battery capacity. (Default)
Note: When setting as “0”, the backup time will be only 10
seconds.

15
 13: Maximum charger current setting
Interface Setting
Parameter 3: Set up the charger maximum current.
1/2/4/6/8: setting the charger maximum current
1/2/4/6/8 in Ampere. (Default: 4A)
Recharge time VS charging current is as below table.
Unit: hours
Model DC1500RT1L DC2000RT1L DC3000RT1L
8A 0.7 1.4 1.1
6A 0.9 1.9 1.4
4A 1.4 2.9 2.1
2A 2.8 5.7 4.2
1A 5.6 11.4 8.5
 16: EPO logic setting
Interface Setting
Parameter 3: Set up the EPO function control logic.
AO: Active Open (Default). When AO is selected as EPO
logic, it will activate EPO function with Pin 1 and Pin 2 in
open status.
AC: Active Close. When AC is selected as EPO logic, it will
activate EPO function with Pin 1 and Pin 2 in close status.
 17: Site fault detection enable/disable
Interface Setting
Parameter 2: Enable or disable site fault detection. You
may choose the following two options:
ENA: Site fault detection enable(Default for 120 models)
DIS: Site fault detection disable(Default for 230 models)
 18: Display setting for autonomy time
Interface
Setting
Parameter 2:
Set
up the
dis
play setting for autonomy
time
EAT: If EAT is selected, it will display the remaining
autonomy time. (Default)
RAT: If RAT is selected, it will show accumulated autonomy
time so far.

16
 00: Exit setting
Interface Setting
Exit the setting mode.
3-6. Operating Mode Description
Operating mode Description LCD display
Online mode When the input voltage is within acceptable
range, UPS will provide pure and stable AC power
to output. The UPS will also charge the battery at
online mode.
ECO
mod
e
Ener
gy s
aving mode:
When the input voltage is within voltage
regulation range, UPS will bypass voltage to
output for energy saving. The UPS will also
charge the battery at ECO mode.
Frequency
Converter mode
When input frequency is within 40 Hz to 70 Hz,
the UPS can be set at a constant output
frequency, 50 Hz or 60 Hz. The UPS will still
charge battery under this mode.
Battery mode
When the input voltage is beyond the acceptable
range or power failure, the UPS will backup
power from battery and alarm is sounding every
5 seconds.
Bypass mode When input voltage is within acceptable range
but UPS is overload, UPS will enter bypass mode
or bypass mode can be set by front panel. Alarm
is sounding every 10 seconds.
Standby mode UPS is powered off and no output supply power,
but still can charge batteries.
Fault mode When a fault has occurred, the ERROR icon and
the fault code will be displayed.

17
3-7. Faults Reference Code
Fault event Fault code Icon Fault event Fault code Icon
Bus start fail 01 x Battery voltage too high 27 x
Bus over
02
x
Battery voltage too low
28
x
Bus under
03
x
Charger
output
short
2A
x
Inverter soft start fail 11 x Over temperature 41 x
Inverter voltage high 12 x Overload 43
Inverter voltage Low 13 x Charger failure 45 x
Inverter output short 14 x Over input current 49 x
3-8. Warning indicator
Warning Icon (flashing) Code Alarm
Low Battery
Sounding every 2 seconds
Overload
Sounding every second
Over input current Sounding 2 beep every 10 seconds
Battery is not connected
Sounding every 2 seconds
Over Charge
Sounding every 2 seconds
Site wiring fault
Sounding every 2 seconds
EPO enable Sounding every 2 seconds
Over temperature Sounding every 2 seconds
Charger failure Sounding every 2 seconds
Battery fault
Sounding every 2 seconds
(At this time, UPS is off to remind
users something wrong with battery)
Out of bypass voltage range
Sounding every 2 seconds
Bypass frequency unstable Sounding every 2 seconds
Battery replacement Sounding every 2 seconds
EEPROM error Sounding every 2 seconds
NOTE: “Site Wiring Fault” function can be enabled/disabled via software. Please check
software manual for the details.

18
4. Troubleshooting
If the UPS system does not operate correctly, please solve the problem by using the table
below.
Symptom
Possible cause
Remedy
No indication and alarm even
though the mains is normal.
The AC input power is not
connected well.
Check if input power cord
firmly connected to the
mains.
The AC input is connected
to the UPS output.
Plug AC input power cord
to AC input correctly.
The icon and the warning
code flash on LCD display
and alarm is sounding every 2
seconds.
EPO function is activated. Set the circuit in closed
position to disable EPO
function.
The icons of and flash
on LCD display and alarm is
sounding every 2 seconds.
Line and neutral
conductors of UPS input
are reversed.
Rotate mains power socket
by 180° and then connect
to UPS system.
The icons of and
flashes on LCD display and alarm
is sounding every 2 seconds.
The external or internal
battery is incorrectly
connected.
Check if all batteries are
connected well.
Fault code is shown as 27 and the
icon is lighting on LCD
display. Alarm is continuously
sounding.
Battery voltage is too high
or the charger is fault.
Contact your dealer.
Fault code is shown as 28 and the
icon is lighting on LCD
display. Alarm is continuously
sounding.
Battery voltage is too low
or the charger is fault.
Contact your dealer.
The icons of and flash
on LCD display and alarm is
sounding every second.
UPS is overload Remove excess loads from
UPS output.
UPS is overloaded. Devices
connected to the UPS are
fed directly by the
electrical network via the
Bypass.
Remove excess loads from
UPS output.
After repetitive overloads,
the UPS is locked in the
Bypass mode. Connected
devices are fed directly by
the mains.
Remove excess loads from
UPS output first. Then shut
down the UPS and restart
it.
Fault code is shown as 49 on LCD
display and alarm is continuously
sounding.
UPS is over input current. Remove excess loads from
UPS output.
Fault code is shown as 43 and the
icon is lighting on LCD
display. Alarm is continuously
sounding.
The UPS shut down
automatically because of
overload at the UPS
output.
Remove excess loads from
UPS output and restart it.